/*
 * Copyright (C) 2013 the original author or authors.
 * See the notice.md file distributed with this work for additional
 * information regarding copyright ownership.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.code.vaadin.internal.localization;

import com.google.code.vaadin.components.localization.EncodedControl;
import com.google.code.vaadin.localization.InjectBundle;
import com.google.code.vaadin.mvp.MVPApplicationException;
import com.google.inject.MembersInjector;

import java.lang.reflect.Field;
import java.util.ResourceBundle;

/**
 * Support component for {@link ResourceBundle} injection.
 *
 * @author Alexey Krylov
 * @see ResourceBundleTypeListener
 * @since 07.02.13
 */
class ResourceBundleInjector<T> implements MembersInjector<T> {

	/*===========================================[ INSTANCE VARIABLES ]===========*/

    private Field field;
    private InjectBundle injectBundle;

	/*===========================================[ CONSTRUCTORS ]=================*/

    ResourceBundleInjector(Field field, InjectBundle injectBundle) {
        this.field = field;
        this.injectBundle = injectBundle;
    }

	/*===========================================[ INTERFACE METHODS ]============*/

    @Override
    public void injectMembers(T instance) {
        try {
            field.setAccessible(true);
            field.set(instance, ResourceBundle.getBundle(injectBundle.baseName(), new EncodedControl(injectBundle.encoding())));
        } catch (Exception e) {
            throw new MVPApplicationException(e);
        }
    }
}